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Scaling for E-Business by Virgilio A. F. Almeida, Daniel A. Menascé

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3.4. The Anatomy of Client/Server Interactions

An e-business function is implemented through client/server interactions. There may be many different interactions associated with the execution of one e-business function as illustrated in Fig. 3.3.

Figure 3.3. E-Business Functions and C/S Interactions.

A C/S interaction starts when a client process makes a request to a server process, called primary server, and ends when the client process receives a reply from the primary server. The primary server may need to request assistance from other servers, called secondary servers, to execute the request from the client. In this case, the primary server ...

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